+#ifndef APT_8_CLEANER_HEADERS
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/pkgsystem.h>
+#endif
+#ifndef APT_10_CLEANER_HEADERS
+#include <apt-pkg/macros.h>
+#endif
+
+class pkgSystem;
+class Configuration;
+
+extern const char *pkgVersion;
+extern const char *pkgLibVersion;